1) Audio file extension 2) Computer audio file ending 3) Computer audio file extension 4) Sound 
[file] A SND (SouND) file is a digital sound file format. There is more than one in existence [disambiguation page needed]. Most commonly a .snd file contains a NeXT sound file. This is essentially the same as the au file format used by Sun Microsystems. The first four bytes of a .snd file contain the hex number 0x2e736e64 which displays as...
Sound resource. A Macintosh audio file format.
Sound